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+Yesterday, one of our interns asked me a question about private method
+in Moose. I told him that for Moose as for Perl, there is no such things
+as private method. By convention, methods prefixed with '\_' are
+considered private.
+
+But I was curious to see if it would be something complicated to
+implement in Moose. First, I've started to look at how the 'augment'
+keyword is done. I've then hacked Moose directly to add the private
+keyword. After asking advice to nothingmuch, he recommended me that I
+implement this in a MooseX::* module instead. The result is here.
+
+From the synopsis, MooseX::MethodPrivate do:
+
+#+BEGIN_SRC perl
+    package Foo;
+    use MooseX::MethodPrivate;
+
+    private 'foo' => sub {
+    };
+
+    protected 'bar' => sub {
+    };
+
+
+    my $foo = Foo->new;
+    $foo->foo;    # die, can't call foo because it's a private method
+    $foo->bar;    # die, can't call bar because it's a protected method
+
+    package Bar;
+    use MooseX::MethodPrivate;
+    extends qw/Foo/;
+
+    sub baz {
+        my $self = shift;
+        $self->foo;    #die, can't call foo because it's a private method
+        $self->bar;    # ok, can call this method because we extends Foo and
+        # it's a protected method
+    }
+#+END_SRC
+
+I was surprised to see how easy it's to extend Moose syntax. All I've
+done was this:
+
+#+BEGIN_SRC perl
+        Moose::Exporter->setup_import_methods(
+            with_caller => [qw( private protected )],);
+#+END_SRC
+
+and write the =private= and =protected= sub. I'm sure there is some
+stuff I can do to improve this, but for a first test, I'm happy with the
+result and still amazed how easy it was to add this two keywords.